Lead-pipe-bending device



LEAD PIPE BENDINGDEVICE OriginalFiled July 20. 1923 4 Lrmentor: Conme@(u' sdhzll,

Patented Dec. 7,1926.

' 7 00mm BLAIsnEf-L,'orniiivrro'nniymrnnf Application filed J'llly 2 0,1923, serial No. s5 2,s42. I ltenewedNovember 2, 19251 My inventionrelates to-ardevice foribend- 'ing lead pipe and the like andparticularly for forming sharp bends such as are formed in S traps andthelike'and for measuring" the angles or the amount of bend put into"the pipe] for producing'uniform results when a series ofpipes'are tobebent to the same extent.

Lead pipes are usually bent around pins 7 orposts and without anyaccurate. means of indicating just the extent ofthe bend and for thepurpose of preventing flattening, the pipe is usually filled with sand,resin, or a coiled springbefore being bent, these nonflattening devicesbeing removed after the bend is made. j

My invention relates to a framework upon 7 which the pipe may besupported by apair von its lower side to fit aroundthe pipe andor'saddles which are pivoted in position so that they will bendassmoothly and easily as the pipe bends vwith a follower 'which acts toforcethe'middle portion of the-pipe downward between its two supportingsaddlesto formja" generally U-shaped or,V-.

shaped bend. The follower is forced down- 1 ward by a power screwengaginga nut conpivoted tie rods with means by which the 'nectedwiththe framefof the'm'achine by pipe supporting saddles may be closedtogether or drawn apart to bring the supportinopoints of'th'e pipe at.varying distances;

1 yfinventionfis illustrated in the accompanying drawings in which i aFigure 1 is a side elevation of the device and, s Fig. 2 is a planlooking down-onto the device.

Referring to the drawings,the-support:

ing frameworkis made up of .two sidebars l and 2. preferably made offiat metal bars 1 having. a series of recesses 3 cut into the i loweredge of each bar and extending up.-

ward about half the width of the bar. Supporting the side bars at oneend are uprights 4 secured to'the end of the barswith a wide foot flangelfor holding the bar in an upf the saddles assumes.

right position. A similar upright 6 sus- V 'tainsthe other end of theside bars with a 1 I broad bearing 6 similar to'thebearing l thetwo'side bars at one'end of theniachine' by mean'sof a pivot 10 whichextends entiresaddles Sand 7. j g I V For this purpose, a follower 15 isrecessed V pivot 10 brings the indicator into The saddle 8 is pivotedbetween yous recesses or notches 3 formedin'the side lyacross'th'emachine, passing, through the the lower end of two 'pairs of tie rods13,

the upper ends of which are'pivoted to a nut 14 raised some distanceabove the ma.-

chine to enablerthe tie rods 12 and 13 to be Y spread apart agreater orless distanceas' desired so that thevpivot 11 may catch in i one or theother of the recesses 3. Y The bend in the pipeis made'by forcingdownward the central bending a loop in'the screw itself.

portion between; the p it is pivoted to'thelower end of an upright. Izpower screw 16. which passes through and @There is shownat the end ofthe bent'pip. section portion ofthe-spiral spring 18.

which isdesignedto hold the pipe round and to prevent it fromcollapsing.

Means are provided for indicating the angle made by the; bend of;thepipe, and as.

herein shown, a disk ao is pivoted on the end of the pivot 10' so as torevolve freely and be turned readily by hand. Pivotedon the end of thepivot 10 is a hand or pointer the disk 20 while the other or rear end isbent roundand secured to the saddle 8 by mean 'of a strap 22. 1 Thus,the turning of thesaddle' 8' on its the same position as the saddle 8. pQ i o By suitable divisions on. the disk 20, the disk will indicate theangle to which the saddle 8 and consequently the pipe resting inBydividing the disk'into quadrants and l I I 'subedividing the quadrantswith one of the squared lines of the circle turned to horizontalposition, the number of degrees indi- 21, one enact-Winona sharpened toform a pointer which remains in contact with cated bythe pointeron thequadrant will indicate the angle formed by the lead pipe.

It will be seen that by the use of the varibarl, the Saddles? and :8 maybe separated 7 or moved together according to the length of the benddesired to be made in the lead pipe. I

A bending device constructed as herein shown is of great use to plumbersand others having occasion to bend lead pipe f0r.vari ous purposes such'as traps, elbows, etc.

I claim p p r g V p 1. In a machinefor bending lead pipe and the like,the combination of a frame formed of a pair of side bars, supportingmeans for said sidebars, a pair of pipe supporting saddles pivotedbetween'said side barsand to the same, a nut above said side bars,tierods connecting said nut with pivotingpoints of saidsaddles, afollower for forcing the central portion of said pipe downward, a screwfor actingon said follower to depress the same, a handle for said screwand an indicator for indicating the amount of the bend formed in thepipe.

2. Ina machine for bending lead pipe and the like, the combination of aframe formed of a-pair of side bars having a series of recesses formedin its lower edge, a support for said bars, "a pipe supporting saddlepivoted between said bars at one end, a second pipe supporting saddlehaving pivots engaging opposite slots in said bars, a follow er forresting on said pipe between said saddles, a nut above said bars, tierods piv oted to said nut at their upper ends and to the pivotalpoints'of said'saddles at their lower ends, a power screw engaging saidnut and said follower for forming the bend in the pipe.

*ooiiNIE millenn al.

